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Collection of tools useful for audio production
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Cadence/c++/carla-plugin/ladspa.cpp

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  1. /*

  2.  * Carla LADSPA Plugin

  3.  * Copyright (C) 2011-2012 Filipe Coelho <falktx@falktx.com>

  4.  *

  5.  * This program is free software; you can redistribute it and/or modify

  6.  * it under the terms of the GNU General Public License as published by

  7.  * the Free Software Foundation; either version 2 of the License, or

  8.  * any later version.

  9.  *

  10.  * This program is distributed in the hope that it will be useful,

  11.  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  12.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

  13.  * GNU General Public License for more details.

  14.  *

  15.  * For a full copy of the GNU General Public License see the COPYING file

  16.  */

  17. 

  18. #include "carla_plugin.hpp"

  19. 

  20. #ifdef WANT_LADSPA

  21. 

  22. #include "carla_ladspa_utils.hpp"

  23. 

  24. CARLA_BACKEND_START_NAMESPACE

  25. 

  26. /*!

  27.  * @defgroup CarlaBackendLadspaPlugin Carla Backend LADSPA Plugin

  28.  *

  29.  * The Carla Backend LADSPA Plugin.\n

  30.  * http://www.ladspa.org/

  31.  * @{

  32.  */

  33. 

  34. class LadspaPlugin : public CarlaPlugin

  35. {

  36. public:

  37.     LadspaPlugin(CarlaEngine* const engine, const unsigned short id)

  38.         : CarlaPlugin(engine, id)

  39.     {

  40.         qDebug("LadspaPlugin::LadspaPlugin()");

  41. 

  42.         m_type = PLUGIN_LADSPA;

  43. 

  44.         handle = h2 = nullptr;

  45.         descriptor  = nullptr;

  46.         rdf_descriptor = nullptr;

  47. 

  48.         paramBuffers = nullptr;

  49.     }

  50. 

  51.     ~LadspaPlugin()

  52.     {

  53.         qDebug("LadspaPlugin::~LadspaPlugin()");

  54. 

  55.         if (descriptor)

  56.         {

  57.             if (descriptor->deactivate && m_activeBefore)

  58.             {

  59.                 if (handle)

  60.                     descriptor->deactivate(handle);

  61.                 if (h2)

  62.                     descriptor->deactivate(h2);

  63.             }

  64. 

  65.             if (descriptor->cleanup)

  66.             {

  67.                 if (handle)

  68.                     descriptor->cleanup(handle);

  69.                 if (h2)

  70.                     descriptor->cleanup(h2);

  71.             }

  72.         }

  73. 

  74.         if (rdf_descriptor)

  75.             delete rdf_descriptor;

  76.     }

  77. 

  78.     // -------------------------------------------------------------------

  79.     // Information (base)

  80. 

  81.     PluginCategory category()

  82.     {

  83.         if (rdf_descriptor)

  84.         {

  85.             const LADSPA_Properties category = rdf_descriptor->Type;

  86. 

  87.             // Specific Types

  88.             if (category & (LADSPA_CLASS_DELAY|LADSPA_CLASS_REVERB))

  89.                 return PLUGIN_CATEGORY_DELAY;

  90.             if (category & (LADSPA_CLASS_PHASER|LADSPA_CLASS_FLANGER|LADSPA_CLASS_CHORUS))

  91.                 return PLUGIN_CATEGORY_MODULATOR;

  92.             if (category & (LADSPA_CLASS_AMPLIFIER))

  93.                 return PLUGIN_CATEGORY_DYNAMICS;

  94.             if (category & (LADSPA_CLASS_UTILITY|LADSPA_CLASS_SPECTRAL|LADSPA_CLASS_FREQUENCY_METER))

  95.                 return PLUGIN_CATEGORY_UTILITY;

  96. 

  97.             // Pre-set LADSPA Types

  98.             if (LADSPA_IS_PLUGIN_DYNAMICS(category))

  99.                 return PLUGIN_CATEGORY_DYNAMICS;

  100.             if (LADSPA_IS_PLUGIN_AMPLITUDE(category))

  101.                 return PLUGIN_CATEGORY_MODULATOR;

  102.             if (LADSPA_IS_PLUGIN_EQ(category))

  103.                 return PLUGIN_CATEGORY_EQ;

  104.             if (LADSPA_IS_PLUGIN_FILTER(category))

  105.                 return PLUGIN_CATEGORY_FILTER;

  106.             if (LADSPA_IS_PLUGIN_FREQUENCY(category))

  107.                 return PLUGIN_CATEGORY_UTILITY;

  108.             if (LADSPA_IS_PLUGIN_SIMULATOR(category))

  109.                 return PLUGIN_CATEGORY_OTHER;

  110.             if (LADSPA_IS_PLUGIN_TIME(category))

  111.                 return PLUGIN_CATEGORY_DELAY;

  112.             if (LADSPA_IS_PLUGIN_GENERATOR(category))

  113.                 return PLUGIN_CATEGORY_SYNTH;

  114.         }

  115. 

  116.         return getPluginCategoryFromName(m_name);

  117.     }

  118. 

  119.     long uniqueId()

  120.     {

  121.         CARLA_ASSERT(descriptor);

  122. 

  123.         return descriptor->UniqueID;

  124.     }

  125. 

  126.     // -------------------------------------------------------------------

  127.     // Information (count)

  128. 

  129.     uint32_t parameterScalePointCount(const uint32_t parameterId)

  130.     {

  131.         CARLA_ASSERT(parameterId < param.count);

  132. 

  133.         int32_t rindex = param.data[parameterId].rindex;

  134. 

  135.         if (rdf_descriptor && rindex < (int32_t)rdf_descriptor->PortCount)

  136.         {

  137.             const LADSPA_RDF_Port* const port = &rdf_descriptor->Ports[rindex];

  138. 

  139.             if (port)

  140.                 return port->ScalePointCount;

  141.         }

  142. 

  143.         return 0;

  144.     }

  145. 

  146.     // -------------------------------------------------------------------

  147.     // Information (per-plugin data)

  148. 

  149.     double getParameterValue(const uint32_t parameterId)

  150.     {

  151.         CARLA_ASSERT(parameterId < param.count);

  152. 

  153.         return paramBuffers[parameterId];

  154.     }

  155. 

  156.     double getParameterScalePointValue(const uint32_t parameterId, const uint32_t scalePointId)

  157.     {

  158.         CARLA_ASSERT(parameterId < param.count);

  159.         CARLA_ASSERT(scalePointId < parameterScalePointCount(parameterId));

  160. 

  161.         int32_t rindex = param.data[parameterId].rindex;

  162. 

  163.         if (rdf_descriptor && rindex < (int32_t)rdf_descriptor->PortCount)

  164.         {

  165.             const LADSPA_RDF_Port* const port = &rdf_descriptor->Ports[rindex];

  166. 

  167.             if (port && scalePointId < port->ScalePointCount)

  168.             {

  169.                 const LADSPA_RDF_ScalePoint* const scalePoint = &port->ScalePoints[scalePointId];

  170. 

  171.                 if (scalePoint)

  172.                     return scalePoint->Value;

  173.             }

  174.         }

  175. 

  176.         return 0.0;

  177.     }

  178. 

  179.     void getLabel(char* const strBuf)

  180.     {

  181.         CARLA_ASSERT(descriptor);

  182. 

  183.         if (descriptor && descriptor->Label)

  184.             strncpy(strBuf, descriptor->Label, STR_MAX);

  185.         else

  186.             CarlaPlugin::getLabel(strBuf);

  187.     }

  188. 

  189.     void getMaker(char* const strBuf)

  190.     {

  191.         CARLA_ASSERT(descriptor);

  192. 

  193.         if (rdf_descriptor && rdf_descriptor->Creator)

  194.             strncpy(strBuf, rdf_descriptor->Creator, STR_MAX);

  195.         else if (descriptor && descriptor->Maker)

  196.             strncpy(strBuf, descriptor->Maker, STR_MAX);

  197.         else

  198.             CarlaPlugin::getMaker(strBuf);

  199.     }

  200. 

  201.     void getCopyright(char* const strBuf)

  202.     {

  203.         CARLA_ASSERT(descriptor);

  204. 

  205.         if (descriptor && descriptor->Copyright)

  206.             strncpy(strBuf, descriptor->Copyright, STR_MAX);

  207.         else

  208.             CarlaPlugin::getCopyright(strBuf);

  209.     }

  210. 

  211.     void getRealName(char* const strBuf)

  212.     {

  213.         CARLA_ASSERT(descriptor);

  214. 

  215.         if (rdf_descriptor && rdf_descriptor->Title)

  216.             strncpy(strBuf, rdf_descriptor->Title, STR_MAX);

  217.         else if (descriptor && descriptor->Name)

  218.             strncpy(strBuf, descriptor->Name, STR_MAX);

  219.         else

  220.             CarlaPlugin::getRealName(strBuf);

  221.     }

  222. 

  223.     void getParameterName(const uint32_t parameterId, char* const strBuf)

  224.     {

  225.         CARLA_ASSERT(descriptor);

  226.         CARLA_ASSERT(parameterId < param.count);

  227. 

  228.         int32_t rindex = param.data[parameterId].rindex;

  229. 

  230.         if (descriptor && rindex < (int32_t)descriptor->PortCount)

  231.             strncpy(strBuf, descriptor->PortNames[rindex], STR_MAX);

  232.         else

  233.             CarlaPlugin::getParameterName(parameterId, strBuf);

  234.     }

  235. 

  236.     void getParameterSymbol(const uint32_t parameterId, char* const strBuf)

  237.     {

  238.         CARLA_ASSERT(parameterId < param.count);

  239. 

  240.         int32_t rindex = param.data[parameterId].rindex;

  241. 

  242.         if (rdf_descriptor && rindex < (int32_t)rdf_descriptor->PortCount)

  243.         {

  244.             const LADSPA_RDF_Port* const port = &rdf_descriptor->Ports[rindex];

  245. 

  246.             if (LADSPA_PORT_HAS_LABEL(port->Hints) && port->Label)

  247.             {

  248.                 strncpy(strBuf, port->Label, STR_MAX);

  249.                 return;

  250.             }

  251.         }

  252. 

  253.         CarlaPlugin::getParameterSymbol(parameterId, strBuf);

  254.     }

  255. 

  256.     void getParameterUnit(const uint32_t parameterId, char* const strBuf)

  257.     {

  258.         CARLA_ASSERT(parameterId < param.count);

  259. 

  260.         int32_t rindex = param.data[parameterId].rindex;

  261. 

  262.         if (rdf_descriptor && rindex < (int32_t)rdf_descriptor->PortCount)

  263.         {

  264.             const LADSPA_RDF_Port* const port = &rdf_descriptor->Ports[rindex];

  265. 

  266.             if (LADSPA_PORT_HAS_UNIT(port->Hints))

  267.             {

  268.                 switch (port->Unit)

  269.                 {

  270.                 case LADSPA_UNIT_DB:

  271.                     strncpy(strBuf, "dB", STR_MAX);

  272.                     return;

  273.                 case LADSPA_UNIT_COEF:

  274.                     strncpy(strBuf, "(coef)", STR_MAX);

  275.                     return;

  276.                 case LADSPA_UNIT_HZ:

  277.                     strncpy(strBuf, "Hz", STR_MAX);

  278.                     return;

  279.                 case LADSPA_UNIT_S:

  280.                     strncpy(strBuf, "s", STR_MAX);

  281.                     return;

  282.                 case LADSPA_UNIT_MS:

  283.                     strncpy(strBuf, "ms", STR_MAX);

  284.                     return;

  285.                 case LADSPA_UNIT_MIN:

  286.                     strncpy(strBuf, "min", STR_MAX);

  287.                     return;

  288.                 }

  289.             }

  290.         }

  291. 

  292.         CarlaPlugin::getParameterUnit(parameterId, strBuf);

  293.     }

  294. 

  295.     void getParameterScalePointLabel(const uint32_t parameterId, const uint32_t scalePointId, char* const strBuf)

  296.     {

  297.         CARLA_ASSERT(parameterId < param.count);

  298.         CARLA_ASSERT(scalePointId < parameterScalePointCount(parameterId));

  299. 

  300.         int32_t rindex = param.data[parameterId].rindex;

  301. 

  302.         if (rdf_descriptor && rindex < (int32_t)rdf_descriptor->PortCount)

  303.         {

  304.             const LADSPA_RDF_Port* const port = &rdf_descriptor->Ports[rindex];

  305. 

  306.             if (port && scalePointId < port->ScalePointCount)

  307.             {

  308.                 const LADSPA_RDF_ScalePoint* const scalePoint = &port->ScalePoints[scalePointId];

  309. 

  310.                 if (scalePoint && scalePoint->Label)

  311.                 {

  312.                     strncpy(strBuf, scalePoint->Label, STR_MAX);

  313.                     return;

  314.                 }

  315.             }

  316.         }

  317. 

  318.         CarlaPlugin::getParameterScalePointLabel(parameterId, scalePointId, strBuf);

  319.     }

  320. 

  321.     // -------------------------------------------------------------------

  322.     // Set data (plugin-specific stuff)

  323. 

  324.     void setParameterValue(const uint32_t parameterId, double value, const bool sendGui, const bool sendOsc, const bool sendCallback)

  325.     {

  326.         CARLA_ASSERT(parameterId < param.count);

  327. 

  328.         paramBuffers[parameterId] = fixParameterValue(value, param.ranges[parameterId]);

  329. 

  330.         CarlaPlugin::setParameterValue(parameterId, value, sendGui, sendOsc, sendCallback);

  331.     }

  332. 

  333.     // -------------------------------------------------------------------

  334.     // Plugin state

  335. 

  336.     void reload()

  337.     {

  338.         qDebug("LadspaPlugin::reload() - start");

  339.         CARLA_ASSERT(descriptor);

  340. 

  341.         // Safely disable plugin for reload

  342.         const ScopedDisabler m(this);

  343. 

  344.         if (x_client->isActive())

  345.             x_client->deactivate();

  346. 

  347.         // Remove client ports

  348.         removeClientPorts();

  349. 

  350.         // Delete old data

  351.         deleteBuffers();

  352. 

  353.         uint32_t aIns, aOuts, params, j;

  354.         aIns = aOuts = params = 0;

  355. 

  356.         const double sampleRate = x_engine->getSampleRate();

  357.         const unsigned long portCount = descriptor->PortCount;

  358. 

  359.         bool forcedStereoIn, forcedStereoOut;

  360.         forcedStereoIn = forcedStereoOut = false;

  361. 

  362.         for (unsigned long i=0; i < portCount; i++)

  363.         {

  364.             const LADSPA_PortDescriptor portType = descriptor->PortDescriptors[i];

  365. 

  366.             if (LADSPA_IS_PORT_AUDIO(portType))

  367.             {

  368.                 if (LADSPA_IS_PORT_INPUT(portType))

  369.                     aIns += 1;

  370.                 else if (LADSPA_IS_PORT_OUTPUT(portType))

  371.                     aOuts += 1;

  372.             }

  373.             else if (LADSPA_IS_PORT_CONTROL(portType))

  374.                 params += 1;

  375.         }

  376. 

  377. #ifndef BUILD_BRIDGE

  378.         if (x_engine->forceStereo() && (aIns == 1 || aOuts == 1) && ! h2)

  379.         {

  380.             h2 = descriptor->instantiate(descriptor, sampleRate);

  381. 

  382.             if (aIns == 1)

  383.             {

  384.                 aIns = 2;

  385.                 forcedStereoIn = true;

  386.             }

  387. 

  388.             if (aOuts == 1)

  389.             {

  390.                 aOuts = 2;

  391.                 forcedStereoOut = true;

  392.             }

  393.         }

  394. #endif

  395. 

  396.         if (aIns > 0)

  397.         {

  398.             aIn.ports    = new CarlaEngineAudioPort*[aIns];

  399.             aIn.rindexes = new uint32_t[aIns];

  400.         }

  401. 

  402.         if (aOuts > 0)

  403.         {

  404.             aOut.ports    = new CarlaEngineAudioPort*[aOuts];

  405.             aOut.rindexes = new uint32_t[aOuts];

  406.         }

  407. 

  408.         if (params > 0)

  409.         {

  410.             param.data   = new ParameterData[params];

  411.             param.ranges = new ParameterRanges[params];

  412.             paramBuffers = new float[params];

  413.         }

  414. 

  415.         bool needsCtrlIn  = false;

  416.         bool needsCtrlOut = false;

  417. 

  418.         const int   portNameSize = x_engine->maxPortNameSize() - 3;

  419.         CarlaString portName;

  420. 

  421.         for (unsigned long i=0; i < portCount; i++)

  422.         {

  423.             const LADSPA_PortDescriptor portType = descriptor->PortDescriptors[i];

  424.             const LADSPA_PortRangeHint portHints = descriptor->PortRangeHints[i];

  425.             const bool hasPortRDF = (rdf_descriptor && i < rdf_descriptor->PortCount);

  426. 

  427.             if (LADSPA_IS_PORT_AUDIO(portType))

  428.             {

  429.                 portName.clear();

  430. 

  431. #ifndef BUILD_BRIDGE

  432.                 if (x_engine->processMode() == PROCESS_MODE_SINGLE_CLIENT)

  433.                 {

  434.                     portName  = m_name;

  435.                     portName += ":";

  436.                 }

  437. #endif

  438. 

  439.                 portName += descriptor->PortNames[i];

  440.                 portName.truncate(portNameSize);

  441. 

  442.                 if (LADSPA_IS_PORT_INPUT(portType))

  443.                 {

  444.                     j = aIn.count++;

  445.                     aIn.ports[j]    = (CarlaEngineAudioPort*)x_client->addPort(CarlaEnginePortTypeAudio, portName, true);

  446.                     aIn.rindexes[j] = i;

  447. 

  448.                     if (forcedStereoIn)

  449.                     {

  450.                         portName += "_2";

  451.                         aIn.ports[1]    = (CarlaEngineAudioPort*)x_client->addPort(CarlaEnginePortTypeAudio, portName, true);

  452.                         aIn.rindexes[1] = i;

  453.                     }

  454.                 }

  455.                 else if (LADSPA_IS_PORT_OUTPUT(portType))

  456.                 {

  457.                     j = aOut.count++;

  458.                     aOut.ports[j]    = (CarlaEngineAudioPort*)x_client->addPort(CarlaEnginePortTypeAudio, portName, false);

  459.                     aOut.rindexes[j] = i;

  460.                     needsCtrlIn = true;

  461. 

  462.                     if (forcedStereoOut)

  463.                     {

  464.                         portName += "_2";

  465.                         aOut.ports[1]    = (CarlaEngineAudioPort*)x_client->addPort(CarlaEnginePortTypeAudio, portName, false);

  466.                         aOut.rindexes[1] = i;

  467.                     }

  468.                 }

  469.                 else

  470.                     qWarning("WARNING - Got a broken Port (Audio, but not input or output)");

  471.             }

  472.             else if (LADSPA_IS_PORT_CONTROL(portType))

  473.             {

  474.                 j = param.count++;

  475.                 param.data[j].index  = j;

  476.                 param.data[j].rindex = i;

  477.                 param.data[j].hints  = 0;

  478.                 param.data[j].midiChannel = 0;

  479.                 param.data[j].midiCC = -1;

  480. 

  481.                 double min, max, def, step, stepSmall, stepLarge;

  482. 

  483.                 // min value

  484.                 if (LADSPA_IS_HINT_BOUNDED_BELOW(portHints.HintDescriptor))

  485.                     min = portHints.LowerBound;

  486.                 else

  487.                     min = 0.0;

  488. 

  489.                 // max value

  490.                 if (LADSPA_IS_HINT_BOUNDED_ABOVE(portHints.HintDescriptor))

  491.                     max = portHints.UpperBound;

  492.                 else

  493.                     max = 1.0;

  494. 

  495.                 if (min > max)

  496.                     max = min;

  497.                 else if (max < min)

  498.                     min = max;

  499. 

  500.                 if (max - min == 0.0)

  501.                 {

  502.                     qWarning("Broken plugin parameter: max - min == 0");

  503.                     max = min + 0.1;

  504.                 }

  505. 

  506.                 // default value

  507.                 if (hasPortRDF && LADSPA_PORT_HAS_DEFAULT(rdf_descriptor->Ports[i].Hints))

  508.                     def = rdf_descriptor->Ports[i].Default;

  509.                 else

  510.                     def = get_default_ladspa_port_value(portHints.HintDescriptor, min, max);

  511. 

  512.                 if (def < min)

  513.                     def = min;

  514.                 else if (def > max)

  515.                     def = max;

  516. 

  517.                 if (LADSPA_IS_HINT_SAMPLE_RATE(portHints.HintDescriptor))

  518.                 {

  519.                     min *= sampleRate;

  520.                     max *= sampleRate;

  521.                     def *= sampleRate;

  522.                     param.data[j].hints |= PARAMETER_USES_SAMPLERATE;

  523.                 }

  524. 

  525.                 if (LADSPA_IS_HINT_TOGGLED(portHints.HintDescriptor))

  526.                 {

  527.                     step = max - min;

  528.                     stepSmall = step;

  529.                     stepLarge = step;

  530.                     param.data[j].hints |= PARAMETER_IS_BOOLEAN;

  531.                 }

  532.                 else if (LADSPA_IS_HINT_INTEGER(portHints.HintDescriptor))

  533.                 {

  534.                     step = 1.0;

  535.                     stepSmall = 1.0;

  536.                     stepLarge = 10.0;

  537.                     param.data[j].hints |= PARAMETER_IS_INTEGER;

  538.                 }

  539.                 else

  540.                 {

  541.                     double range = max - min;

  542.                     step = range/100.0;

  543.                     stepSmall = range/1000.0;

  544.                     stepLarge = range/10.0;

  545.                 }

  546. 

  547.                 if (LADSPA_IS_PORT_INPUT(portType))

  548.                 {

  549.                     param.data[j].type   = PARAMETER_INPUT;

  550.                     param.data[j].hints |= PARAMETER_IS_ENABLED;

  551.                     param.data[j].hints |= PARAMETER_IS_AUTOMABLE;

  552.                     needsCtrlIn = true;

  553.                 }

  554.                 else if (LADSPA_IS_PORT_OUTPUT(portType))

  555.                 {

  556.                     if (strcmp(descriptor->PortNames[i], "latency") == 0 || strcmp(descriptor->PortNames[i], "_latency") == 0)

  557.                     {

  558.                         min = 0.0;

  559.                         max = sampleRate;

  560.                         def = 0.0;

  561.                         step = 1.0;

  562.                         stepSmall = 1.0;

  563.                         stepLarge = 1.0;

  564. 

  565.                         param.data[j].type  = PARAMETER_LATENCY;

  566.                         param.data[j].hints = 0;

  567.                     }

  568.                     else if (strcmp(descriptor->PortNames[i], "_sample-rate") == 0)

  569.                     {

  570.                         def = sampleRate;

  571.                         step = 1.0;

  572.                         stepSmall = 1.0;

  573.                         stepLarge = 1.0;

  574. 

  575.                         param.data[j].type  = PARAMETER_SAMPLE_RATE;

  576.                         param.data[j].hints = 0;

  577.                     }

  578.                     else

  579.                     {

  580.                         param.data[j].type   = PARAMETER_OUTPUT;

  581.                         param.data[j].hints |= PARAMETER_IS_ENABLED;

  582.                         param.data[j].hints |= PARAMETER_IS_AUTOMABLE;

  583.                         needsCtrlOut = true;

  584.                     }

  585.                 }

  586.                 else

  587.                 {

  588.                     param.data[j].type = PARAMETER_UNKNOWN;

  589.                     qWarning("WARNING - Got a broken Port (Control, but not input or output)");

  590.                 }

  591. 

  592.                 // extra parameter hints

  593.                 if (LADSPA_IS_HINT_LOGARITHMIC(portHints.HintDescriptor))

  594.                     param.data[j].hints |= PARAMETER_IS_LOGARITHMIC;

  595. 

  596.                 // check for scalepoints, require at least 2 to make it useful

  597.                 if (hasPortRDF && rdf_descriptor->Ports[i].ScalePointCount > 1)

  598.                     param.data[j].hints |= PARAMETER_USES_SCALEPOINTS;

  599. 

  600.                 param.ranges[j].min = min;

  601.                 param.ranges[j].max = max;

  602.                 param.ranges[j].def = def;

  603.                 param.ranges[j].step = step;

  604.                 param.ranges[j].stepSmall = stepSmall;

  605.                 param.ranges[j].stepLarge = stepLarge;

  606. 

  607.                 // Start parameters in their default values

  608.                 paramBuffers[j] = def;

  609. 

  610.                 descriptor->connect_port(handle, i, &paramBuffers[j]);

  611.                 if (h2) descriptor->connect_port(h2, i, &paramBuffers[j]);

  612.             }

  613.             else

  614.             {

  615.                 // Not Audio or Control

  616.                 qCritical("ERROR - Got a broken Port (neither Audio or Control)");

  617.                 descriptor->connect_port(handle, i, nullptr);

  618.                 if (h2) descriptor->connect_port(h2, i, nullptr);

  619.             }

  620.         }

  621. 

  622.         if (needsCtrlIn)

  623.         {

  624.             portName.clear();

  625. 

  626. #ifndef BUILD_BRIDGE

  627.             if (x_engine->processMode() == PROCESS_MODE_SINGLE_CLIENT)

  628.             {

  629.                 portName  = m_name;

  630.                 portName += ":";

  631.             }

  632. #endif

  633.             portName += "control-in";

  634.             portName.truncate(portNameSize);

  635. 

  636.             param.portCin = (CarlaEngineControlPort*)x_client->addPort(CarlaEnginePortTypeControl, portName, true);

  637.         }

  638. 

  639.         if (needsCtrlOut)

  640.         {

  641.             portName.clear();

  642. 

  643. #ifndef BUILD_BRIDGE

  644.             if (x_engine->processMode() == PROCESS_MODE_SINGLE_CLIENT)

  645.             {

  646.                 portName  = m_name;

  647.                 portName += ":";

  648.             }

  649. #endif

  650.             portName += "control-out";

  651.             portName.truncate(portNameSize);

  652. 

  653.             param.portCout = (CarlaEngineControlPort*)x_client->addPort(CarlaEnginePortTypeControl, portName, false);

  654.         }

  655. 

  656.         aIn.count   = aIns;

  657.         aOut.count  = aOuts;

  658.         param.count = params;

  659. 

  660.         // plugin checks

  661.         m_hints &= ~(PLUGIN_IS_SYNTH | PLUGIN_USES_CHUNKS | PLUGIN_CAN_DRYWET | PLUGIN_CAN_VOLUME | PLUGIN_CAN_BALANCE | PLUGIN_CAN_FORCE_STEREO);

  662. 

  663.         if (aOuts > 0 && (aIns == aOuts || aIns == 1))

  664.             m_hints |= PLUGIN_CAN_DRYWET;

  665. 

  666.         if (aOuts > 0)

  667.             m_hints |= PLUGIN_CAN_VOLUME;

  668. 

  669.         if (aOuts >= 2 && aOuts%2 == 0)

  670.             m_hints |= PLUGIN_CAN_BALANCE;

  671. 

  672.         if (aIns <= 2 && aOuts <= 2 && (aIns == aOuts || aIns == 0 || aOuts == 0))

  673.             m_hints |= PLUGIN_CAN_FORCE_STEREO;

  674. 

  675.         // check latency

  676.         if (m_hints & PLUGIN_CAN_DRYWET)

  677.         {

  678.             bool hasLatency = false;

  679.             m_latency = 0;

  680. 

  681.             for (uint32_t i=0; i < param.count; i++)

  682.             {

  683.                 if (param.data[i].type == PARAMETER_LATENCY)

  684.                 {

  685.                     // pre-run so plugin can update latency control-port

  686.                     float tmpIn[2][aIns];

  687.                     float tmpOut[2][aOuts];

  688. 

  689.                     for (j=0; j < aIn.count; j++)

  690.                     {

  691.                         tmpIn[j][0] = 0.0f;

  692.                         tmpIn[j][1] = 0.0f;

  693. 

  694.                         if (j == 0 || ! h2)

  695.                             descriptor->connect_port(handle, aIn.rindexes[j], tmpIn[j]);

  696.                     }

  697. 

  698.                     for (j=0; j < aOut.count; j++)

  699.                     {

  700.                         tmpOut[j][0] = 0.0f;

  701.                         tmpOut[j][1] = 0.0f;

  702. 

  703.                         if (j == 0 || ! h2)

  704.                             descriptor->connect_port(handle, aOut.rindexes[j], tmpOut[j]);

  705.                     }

  706. 

  707.                     if (descriptor->activate)

  708.                         descriptor->activate(handle);

  709. 

  710.                     descriptor->run(handle, 2);

  711. 

  712.                     if (descriptor->deactivate)

  713.                         descriptor->deactivate(handle);

  714. 

  715.                     m_latency = rint(paramBuffers[i]);

  716.                     hasLatency = true;

  717.                     break;

  718.                 }

  719.             }

  720. 

  721.             if (hasLatency)

  722.             {

  723.                 x_client->setLatency(m_latency);

  724.                 recreateLatencyBuffers();

  725.             }

  726.         }

  727. 

  728.         x_client->activate();

  729. 

  730.         qDebug("LadspaPlugin::reload() - end");

  731.     }

  732. 

  733.     // -------------------------------------------------------------------

  734.     // Plugin processing

  735. 

  736.     void process(float** const inBuffer, float** const outBuffer, const uint32_t frames, const uint32_t framesOffset)

  737.     {

  738.         uint32_t i, k;

  739. 

  740.         double aInsPeak[2]  = { 0.0 };

  741.         double aOutsPeak[2] = { 0.0 };

  742. 

  743.         CARLA_PROCESS_CONTINUE_CHECK;

  744. 

  745.         // --------------------------------------------------------------------------------------------------------

  746.         // Input VU

  747. 

  748. #ifndef BUILD_BRIDGE

  749.         if (aIn.count > 0 && x_engine->processMode() != PROCESS_MODE_CONTINUOUS_RACK)

  750. #else

  751.         if (aIn.count > 0)

  752. #endif

  753.         {

  754.             if (aIn.count == 1)

  755.             {

  756.                 for (k=0; k < frames; k++)

  757.                 {

  758.                     if (abs(inBuffer[0][k]) > aInsPeak[0])

  759.                         aInsPeak[0] = abs(inBuffer[0][k]);

  760.                 }

  761.             }

  762.             else if (aIn.count > 1)

  763.             {

  764.                 for (k=0; k < frames; k++)

  765.                 {

  766.                     if (abs(inBuffer[0][k]) > aInsPeak[0])

  767.                         aInsPeak[0] = abs(inBuffer[0][k]);

  768. 

  769.                     if (abs(inBuffer[1][k]) > aInsPeak[1])

  770.                         aInsPeak[1] = abs(inBuffer[1][k]);

  771.                 }

  772.             }

  773.         }

  774. 

  775.         CARLA_PROCESS_CONTINUE_CHECK;

  776. 

  777.         // --------------------------------------------------------------------------------------------------------

  778.         // Parameters Input [Automation]

  779. 

  780.         if (param.portCin && m_active && m_activeBefore)

  781.         {

  782.             const CarlaEngineControlEvent* cinEvent;

  783.             uint32_t time, nEvents = param.portCin->getEventCount();

  784. 

  785.             for (i=0; i < nEvents; i++)

  786.             {

  787.                 cinEvent = param.portCin->getEvent(i);

  788. 

  789.                 if (! cinEvent)

  790.                     continue;

  791. 

  792.                 time = cinEvent->time - framesOffset;

  793. 

  794.                 if (time >= frames)

  795.                     continue;

  796. 

  797.                 // Control change

  798.                 switch (cinEvent->type)

  799.                 {

  800.                 case CarlaEngineNullEvent:

  801.                     break;

  802. 

  803.                 case CarlaEngineParameterChangeEvent:

  804.                 {

  805.                     double value;

  806. 

  807.                     // Control backend stuff

  808.                     if (cinEvent->channel == m_ctrlInChannel)

  809.                     {

  810.                         if (MIDI_IS_CONTROL_BREATH_CONTROLLER(cinEvent->parameter) && (m_hints & PLUGIN_CAN_DRYWET) > 0)

  811.                         {

  812.                             value = cinEvent->value;

  813.                             setDryWet(value, false, false);

  814.                             postponeEvent(PluginPostEventParameterChange, PARAMETER_DRYWET, 0, value);

  815.                             continue;

  816.                         }

  817. 

  818.                         if (MIDI_IS_CONTROL_CHANNEL_VOLUME(cinEvent->parameter) && (m_hints & PLUGIN_CAN_VOLUME) > 0)

  819.                         {

  820.                             value = cinEvent->value*127/100;

  821.                             setVolume(value, false, false);

  822.                             postponeEvent(PluginPostEventParameterChange, PARAMETER_VOLUME, 0, value);

  823.                             continue;

  824.                         }

  825. 

  826.                         if (MIDI_IS_CONTROL_BALANCE(cinEvent->parameter) && (m_hints & PLUGIN_CAN_BALANCE) > 0)

  827.                         {

  828.                             double left, right;

  829.                             value = cinEvent->value/0.5 - 1.0;

  830. 

  831.                             if (value < 0.0)

  832.                             {

  833.                                 left  = -1.0;

  834.                                 right = (value*2)+1.0;

  835.                             }

  836.                             else if (value > 0.0)

  837.                             {

  838.                                 left  = (value*2)-1.0;

  839.                                 right = 1.0;

  840.                             }

  841.                             else

  842.                             {

  843.                                 left  = -1.0;

  844.                                 right = 1.0;

  845.                             }

  846. 

  847.                             setBalanceLeft(left, false, false);

  848.                             setBalanceRight(right, false, false);

  849.                             postponeEvent(PluginPostEventParameterChange, PARAMETER_BALANCE_LEFT, 0, left);

  850.                             postponeEvent(PluginPostEventParameterChange, PARAMETER_BALANCE_RIGHT, 0, right);

  851.                             continue;

  852.                         }

  853.                     }

  854. 

  855.                     // Control plugin parameters

  856.                     for (k=0; k < param.count; k++)

  857.                     {

  858.                         if (param.data[k].midiChannel != cinEvent->channel)

  859.                             continue;

  860.                         if (param.data[k].midiCC != cinEvent->parameter)

  861.                             continue;

  862.                         if (param.data[k].type != PARAMETER_INPUT)

  863.                             continue;

  864. 

  865.                         if (param.data[k].hints & PARAMETER_IS_AUTOMABLE)

  866.                         {

  867.                             if (param.data[k].hints & PARAMETER_IS_BOOLEAN)

  868.                             {

  869.                                 value = cinEvent->value < 0.5 ? param.ranges[k].min : param.ranges[k].max;

  870.                             }

  871.                             else

  872.                             {

  873.                                 value = cinEvent->value * (param.ranges[k].max - param.ranges[k].min) + param.ranges[k].min;

  874. 

  875.                                 if (param.data[k].hints & PARAMETER_IS_INTEGER)

  876.                                     value = rint(value);

  877.                             }

  878. 

  879.                             setParameterValue(k, value, false, false, false);

  880.                             postponeEvent(PluginPostEventParameterChange, k, 0, value);

  881.                         }

  882.                     }

  883. 

  884.                     break;

  885.                 }

  886. 

  887.                 case CarlaEngineMidiBankChangeEvent:

  888.                 case CarlaEngineMidiProgramChangeEvent:

  889.                     break;

  890. 

  891.                 case CarlaEngineAllSoundOffEvent:

  892.                     if (cinEvent->channel == m_ctrlInChannel)

  893.                     {

  894.                         if (descriptor->deactivate)

  895.                         {

  896.                             descriptor->deactivate(handle);

  897.                             if (h2) descriptor->deactivate(h2);

  898.                         }

  899. 

  900.                         if (descriptor->activate)

  901.                         {

  902.                             descriptor->activate(handle);

  903.                             if (h2) descriptor->activate(h2);

  904.                         }

  905. 

  906.                         postponeEvent(PluginPostEventParameterChange, PARAMETER_ACTIVE, 0, 0.0);

  907.                         postponeEvent(PluginPostEventParameterChange, PARAMETER_ACTIVE, 0, 1.0);

  908.                     }

  909.                     break;

  910. 

  911.                 case CarlaEngineAllNotesOffEvent:

  912.                     break;

  913.                 }

  914.             }

  915.         } // End of Parameters Input

  916. 

  917.         CARLA_PROCESS_CONTINUE_CHECK;

  918. 

  919.         // --------------------------------------------------------------------------------------------------------

  920.         // Special Parameters

  921. 

  922. #if 0

  923.         for (k=0; k < param.count; k++)

  924.         {

  925.             if (param.data[k].type == PARAMETER_LATENCY)

  926.             {

  927.                 // TODO: ladspa special params

  928.             }

  929.         }

  930. 

  931.         CARLA_PROCESS_CONTINUE_CHECK;

  932. #endif

  933. 

  934.         // --------------------------------------------------------------------------------------------------------

  935.         // Plugin processing

  936. 

  937.         if (m_active)

  938.         {

  939.             if (! m_activeBefore)

  940.             {

  941.                 if (m_latency > 0)

  942.                 {

  943.                     for (i=0; i < aIn.count; i++)

  944.                         memset(m_latencyBuffers[i], 0, sizeof(float)*m_latency);

  945.                 }

  946. 

  947.                 if (descriptor->activate)

  948.                 {

  949.                     descriptor->activate(handle);

  950.                     if (h2) descriptor->activate(h2);

  951.                 }

  952.             }

  953. 

  954.             for (i=0; i < aIn.count; i++)

  955.             {

  956.                 if (i == 0 || ! h2) descriptor->connect_port(handle, aIn.rindexes[i], inBuffer[i]);

  957.                 else if (i == 1)    descriptor->connect_port(h2, aIn.rindexes[i], inBuffer[i]);

  958.             }

  959. 

  960.             for (i=0; i < aOut.count; i++)

  961.             {

  962.                 if (i == 0 || ! h2) descriptor->connect_port(handle, aOut.rindexes[i], outBuffer[i]);

  963.                 else if (i == 1)    descriptor->connect_port(h2, aOut.rindexes[i], outBuffer[i]);

  964.             }

  965. 

  966.             descriptor->run(handle, frames);

  967.             if (h2) descriptor->run(h2, frames);

  968.         }

  969.         else

  970.         {

  971.             if (m_activeBefore)

  972.             {

  973.                 if (descriptor->deactivate)

  974.                 {

  975.                     descriptor->deactivate(handle);

  976.                     if (h2) descriptor->deactivate(h2);

  977.                 }

  978.             }

  979.         }

  980. 

  981.         CARLA_PROCESS_CONTINUE_CHECK;

  982. 

  983.         // --------------------------------------------------------------------------------------------------------

  984.         // Post-processing (dry/wet, volume and balance)

  985. 

  986.         if (m_active)

  987.         {

  988.             bool do_drywet  = (m_hints & PLUGIN_CAN_DRYWET) > 0 && x_dryWet != 1.0;

  989.             bool do_volume  = (m_hints & PLUGIN_CAN_VOLUME) > 0 && x_volume != 1.0;

  990.             bool do_balance = (m_hints & PLUGIN_CAN_BALANCE) > 0 && (x_balanceLeft != -1.0 || x_balanceRight != 1.0);

  991. 

  992.             double bal_rangeL, bal_rangeR;

  993.             float bufValue, oldBufLeft[do_balance ? frames : 0];

  994. 

  995.             for (i=0; i < aOut.count; i++)

  996.             {

  997.                 // Dry/Wet

  998.                 if (do_drywet)

  999.                 {

  1000.                     for (k=0; k < frames; k++)

  1001.                     {

  1002.                         if (k < m_latency && m_latency < frames)

  1003.                             bufValue = (aIn.count == 1) ? m_latencyBuffers[0][k] : m_latencyBuffers[i][k];

  1004.                         else

  1005.                             bufValue = (aIn.count == 1) ? inBuffer[0][k-m_latency] : inBuffer[i][k-m_latency];

  1006. 

  1007.                         outBuffer[i][k] = (outBuffer[i][k]*x_dryWet)+(bufValue*(1.0-x_dryWet));

  1008.                     }

  1009.                 }

  1010. 

  1011.                 // Balance

  1012.                 if (do_balance)

  1013.                 {

  1014.                     if (i%2 == 0)

  1015.                         memcpy(&oldBufLeft, outBuffer[i], sizeof(float)*frames);

  1016. 

  1017.                     bal_rangeL = (x_balanceLeft+1.0)/2;

  1018.                     bal_rangeR = (x_balanceRight+1.0)/2;

  1019. 

  1020.                     for (k=0; k < frames; k++)

  1021.                     {

  1022.                         if (i%2 == 0)

  1023.                         {

  1024.                             // left output

  1025.                             outBuffer[i][k]  = oldBufLeft[k]*(1.0-bal_rangeL);

  1026.                             outBuffer[i][k] += outBuffer[i+1][k]*(1.0-bal_rangeR);

  1027.                         }

  1028.                         else

  1029.                         {

  1030.                             // right

  1031.                             outBuffer[i][k]  = outBuffer[i][k]*bal_rangeR;

  1032.                             outBuffer[i][k] += oldBufLeft[k]*bal_rangeL;

  1033.                         }

  1034.                     }

  1035.                 }

  1036. 

  1037.                 // Volume

  1038.                 if (do_volume)

  1039.                 {

  1040.                     for (k=0; k < frames; k++)

  1041.                         outBuffer[i][k] *= x_volume;

  1042.                 }

  1043. 

  1044.                 // Output VU

  1045. #ifndef BUILD_BRIDGE

  1046.                 if (x_engine->processMode() != PROCESS_MODE_CONTINUOUS_RACK)

  1047. #endif

  1048.                 {

  1049.                     for (k=0; i < 2 && k < frames; k++)

  1050.                     {

  1051.                         if (abs(outBuffer[i][k]) > aOutsPeak[i])

  1052.                             aOutsPeak[i] = abs(outBuffer[i][k]);

  1053.                     }

  1054.                 }

  1055.             }

  1056. 

  1057.             // Latency, save values for next callback

  1058.             if (m_latency > 0 && m_latency < frames)

  1059.             {

  1060.                 for (i=0; i < aIn.count; i++)

  1061.                     memcpy(m_latencyBuffers[i], inBuffer[i] + (frames - m_latency), sizeof(float)*m_latency);

  1062.             }

  1063.         }

  1064.         else

  1065.         {

  1066.             // disable any output sound if not active

  1067.             for (i=0; i < aOut.count; i++)

  1068.                 carla_zeroF(outBuffer[i], frames);

  1069. 

  1070.             aOutsPeak[0] = 0.0;

  1071.             aOutsPeak[1] = 0.0;

  1072. 

  1073.         } // End of Post-processing

  1074. 

  1075.         CARLA_PROCESS_CONTINUE_CHECK;

  1076. 

  1077.         // --------------------------------------------------------------------------------------------------------

  1078.         // Control Output

  1079. 

  1080.         if (param.portCout && m_active)

  1081.         {

  1082.             double value;

  1083. 

  1084.             for (k=0; k < param.count; k++)

  1085.             {

  1086.                 if (param.data[k].type == PARAMETER_OUTPUT)

  1087.                 {

  1088.                     fixParameterValue(paramBuffers[k], param.ranges[k]);

  1089. 

  1090.                     if (param.data[k].midiCC > 0)

  1091.                     {

  1092.                         value = (paramBuffers[k] - param.ranges[k].min) / (param.ranges[k].max - param.ranges[k].min);

  1093.                         param.portCout->writeEvent(CarlaEngineParameterChangeEvent, framesOffset, param.data[k].midiChannel, param.data[k].midiCC, value);

  1094.                     }

  1095.                 }

  1096.             }

  1097.         } // End of Control Output

  1098. 

  1099.         CARLA_PROCESS_CONTINUE_CHECK;

  1100. 

  1101.         // --------------------------------------------------------------------------------------------------------

  1102.         // Peak Values

  1103. 

  1104.         x_engine->setInputPeak(m_id, 0, aInsPeak[0]);

  1105.         x_engine->setInputPeak(m_id, 1, aInsPeak[1]);

  1106.         x_engine->setOutputPeak(m_id, 0, aOutsPeak[0]);

  1107.         x_engine->setOutputPeak(m_id, 1, aOutsPeak[1]);

  1108. 

  1109.         m_activeBefore = m_active;

  1110.     }

  1111. 

  1112.     // -------------------------------------------------------------------

  1113.     // Cleanup

  1114. 

  1115.     void deleteBuffers()

  1116.     {

  1117.         qDebug("LadspaPlugin::deleteBuffers() - start");

  1118. 

  1119.         if (param.count > 0)

  1120.             delete[] paramBuffers;

  1121. 

  1122.         paramBuffers = nullptr;

  1123. 

  1124.         CarlaPlugin::deleteBuffers();

  1125. 

  1126.         qDebug("LadspaPlugin::deleteBuffers() - end");

  1127.     }

  1128. 

  1129.     // -------------------------------------------------------------------

  1130. 

  1131.     bool init(const char* const filename, const char* const name, const char* const label, const LADSPA_RDF_Descriptor* const rdf_descriptor_)

  1132.     {

  1133.         // ---------------------------------------------------------------

  1134.         // open DLL

  1135. 

  1136.         if (! libOpen(filename))

  1137.         {

  1138.             x_engine->setLastError(libError(filename));

  1139.             return false;

  1140.         }

  1141. 

  1142.         // ---------------------------------------------------------------

  1143.         // get DLL main entry

  1144. 

  1145.         const LADSPA_Descriptor_Function descFn = (LADSPA_Descriptor_Function)libSymbol("ladspa_descriptor");

  1146. 

  1147.         if (! descFn)

  1148.         {

  1149.             x_engine->setLastError("Could not find the LASDPA Descriptor in the plugin library");

  1150.             return false;

  1151.         }

  1152. 

  1153.         // ---------------------------------------------------------------

  1154.         // get descriptor that matches label

  1155. 

  1156.         unsigned long i = 0;

  1157.         while ((descriptor = descFn(i++)))

  1158.         {

  1159.             if (strcmp(descriptor->Label, label) == 0)

  1160.                 break;

  1161.         }

  1162. 

  1163.         if (! descriptor)

  1164.         {

  1165.             x_engine->setLastError("Could not find the requested plugin Label in the plugin library");

  1166.             return false;

  1167.         }

  1168. 

  1169.         // ---------------------------------------------------------------

  1170.         // get info

  1171. 

  1172.         m_filename = strdup(filename);

  1173. 

  1174.         if (is_ladspa_rdf_descriptor_valid(rdf_descriptor_, descriptor))

  1175.             rdf_descriptor = ladspa_rdf_dup(rdf_descriptor_);

  1176. 

  1177.         if (name)

  1178.             m_name = x_engine->getUniquePluginName(name);

  1179.         else if (rdf_descriptor && rdf_descriptor->Title)

  1180.             m_name = x_engine->getUniquePluginName(rdf_descriptor->Title);

  1181.         else

  1182.             m_name = x_engine->getUniquePluginName(descriptor->Name);

  1183. 

  1184.         // ---------------------------------------------------------------

  1185.         // register client

  1186. 

  1187.         x_client = x_engine->addClient(this);

  1188. 

  1189.         if (! x_client->isOk())

  1190.         {

  1191.             x_engine->setLastError("Failed to register plugin client");

  1192.             return false;

  1193.         }

  1194. 

  1195.         // ---------------------------------------------------------------

  1196.         // initialize plugin

  1197. 

  1198.         handle = descriptor->instantiate(descriptor, x_engine->getSampleRate());

  1199. 

  1200.         if (! handle)

  1201.         {

  1202.             x_engine->setLastError("Plugin failed to initialize");

  1203.             return false;

  1204.         }

  1205. 

  1206.         return true;

  1207.     }

  1208. 

  1209. private:

  1210.     LADSPA_Handle handle, h2;

  1211.     const LADSPA_Descriptor* descriptor;

  1212.     const LADSPA_RDF_Descriptor* rdf_descriptor;

  1213. 

  1214.     float* paramBuffers;

  1215. };

  1216. 

  1217. /**@}*/

  1218. 

  1219. CARLA_BACKEND_END_NAMESPACE

  1220. 

  1221. #else // WANT_LADSPA

  1222. #  warning Building without LADSPA support

  1223. #endif

  1224. 

  1225. CARLA_BACKEND_START_NAMESPACE

  1226. 

  1227. CarlaPlugin* CarlaPlugin::newLADSPA(const initializer& init, const void* const extra)

  1228. {

  1229.     qDebug("CarlaPlugin::newLADSPA(%p, \"%s\", \"%s\", \"%s\", %p)", init.engine, init.filename, init.name, init.label, extra);

  1230. 

  1231. #ifdef WANT_LADSPA

  1232.     short id = init.engine->getNewPluginId();

  1233. 

  1234.     if (id < 0 || id > init.engine->maxPluginNumber())

  1235.     {

  1236.         init.engine->setLastError("Maximum number of plugins reached");

  1237.         return nullptr;

  1238.     }

  1239. 

  1240.     LadspaPlugin* const plugin = new LadspaPlugin(init.engine, id);

  1241. 

  1242.     if (! plugin->init(init.filename, init.name, init.label, (const LADSPA_RDF_Descriptor*)extra))

  1243.     {

  1244.         delete plugin;

  1245.         return nullptr;

  1246.     }

  1247. 

  1248.     plugin->reload();

  1249. 

  1250. # ifndef BUILD_BRIDGE

  1251.     if (init.engine->processMode() == PROCESS_MODE_CONTINUOUS_RACK)

  1252.     {

  1253.         if (! (plugin->hints() & PLUGIN_CAN_FORCE_STEREO))

  1254.         {

  1255.             init.engine->setLastError("Carla's rack mode can only work with Mono or Stereo LADSPA plugins, sorry!");

  1256.             delete plugin;

  1257.             return nullptr;

  1258.         }

  1259.     }

  1260. # endif

  1261. 

  1262.     plugin->registerToOscControl();

  1263. 

  1264.     return plugin;

  1265. #else

  1266.     init.engine->setLastError("LADSPA support not available");

  1267.     return nullptr;

  1268. #endif

  1269. }

  1270. 

  1271. CARLA_BACKEND_END_NAMESPACE